Best Graduation Booklet Mailing Envelopes in 2026

✉️ 100 ENVELOPE PACK; these envelopes are manufactured with a WINDOW-LESS front panel for the perfect choice for small businesses, home offices and everyday use, #10 Security Envelopes are provided in a 100-envelope pack

✉️ SUPER SECURITY TINT PATTERN; #10 envelopes designed with a secure, security tint-pattern to protect contents and sensitive information, perfect for ultra-secure mailing

✉️ QUICK-SEAL CLOSURE; our #10 envelopes are designed with an ultra strong SELF-SEAL adhesive strip to create a full, super secure seal across each envelope's width that won't easily open or tear, ideal for mailing for any letter sized and larger documents without splitting

100-Pack of 9 x 12 inch catalog envelopes

Durable 28-pound brown kraft material provides privacy and strength

Easy-to-seal Peel and Seal closure—no moisture needed

9X12 CATALOG ENVELOPES; Aimoh’s White 9x12 Security Envelopes combine a professional security tint pattern, large size for business documents and premium quality for the best 9x12 envelopes on the market

SECURITY TINT PATTERN; ideal for secure business mailing and sensitive correspondence, each 9x12 envelope contains a super secure, security tint pattern to protect contents, information and data when mailing

FOR 8.5X11 DOCUMENTS; large 9x12 size and strong QUICK-SEAL closure security tinted envelopes, perfect for photos, catalogs, thicker, larger documents and other business mailings

Quality Park's 6 x 9 catalog envelopes are perfect for holding folded documents or smaller items. They are great for mailing, storage and organizing in both home and office environments.

Redi-Strip provides a clean, quick seal immediately upon contact. Simply peel off the adhesive strip and press to seal. The peel-off strip protects the adhesive from dust for a longer shelf life

Manufactured from heavyweight 28 lb. white wove stock to give contents extra protection during mailing, storage and handling

9x12 KRAFT ENVELOPES; Aimoh’s Catalog Envelopes combine tough 28lb golden kraft paper stock, strong self-sealing SELF-SEAL Closure for the best catalog envelopes on the market, perfect for large documents and all business correspondence

DURABLE MULTI-PURPOSE; Ideal for mailing catalogues, magazines, documents, direct mail, promotional material, brochures and more, Aimoh’s Catalog Envelopes can be easily hand addressed or customized with business information

28LB STOCK; manufactured from tough, durable Construction like 28lb paper stock, the brown kraft material will insure privacy of the envelopes contents, the durable, woven paper extends the tampering resistance of this envelope, standing up to normal postal wear and tear without damage,

HIGH QUALITY & BULK PRICING - 24lbs high quality envelopes at a fraction of the price

NO NEED TO LICK THE FLAP ANYMORE - Very convenient

SELF SEAL ENVELOPE- Just peel and stick 4 1/8 in. x 9 1/2 in size envelop

Size: A7 size white environmental protection envelope, made of 5 1/4" x 7 1/4" standard A7 size, with a square seal in the form of a glue booklet, made of high-quality paper, thick and durable, with excellent sealing performance. Your privacy will be well protected.

Design: This 5x7 envelope is very suitable for 5x7 cards/photos. These envelopes are also very suitable for direct mail, letters, postcards, weddings, birthdays, baby showers, graduations, holidays, handmade cards, business, and various party invitation cards. So you can rely on them to meet all your special mailing needs.

Sealing: This is a huge time-saving envelope, each envelope comes with a separate tape, just tear off the protective strip, press, and seal it. Easy to seal peeling and sealing and closing operations, this type of adhesive is ideal for commercial applications, wedding announcements, and mailing.

STOCK UP: Ensure you always have envelopes in hand for all your mailing needs

MULTIPLE USES: Perfect for mailing holiday cards, greeting cards, handwriting notes, photos, save the dates, invitations, thank you notes, and more. Eligible for mailing as a letter

PREMIUM QUALITY: Booklet style square flap with a glue seal closure; 70lb text paper stock; made with a minimum of 30% post-consumer fiber; uncoated finish is great for ink or LaserJet printers

SUPER STRONG CONSTRUCTION – Standard White Envelopes Are Crafted of Heavy, Durable 24lb Paper for Exceptional Rip, Tear & Puncture Resistance

BOOKLET ORIENTATION – Classic Open From side Style Enables Fast, Convenient Stuffing for Letter, Legal Document, Pamphlet, crafts, Coupons, Greeting Card, Christmas Cards, Wedding Invitations, hand made greeting cards, folded letters, CDs, Other Common Mailers

LETTER SIZE PRICING – Ideal 6” x 9” Size Offers Maximum Space Within USPS 1-Stamp Dimension Requirements; Buy Bulk & Save Big on Both Supplies & Shipping

9 x 12 BOOKLET ENVELOPE PACK – Business Envelopes Are Perfect for Mailing a Variety of Big Documents Including Booklets, Catalogs, Forms, Invoices & Cards Great envelopes for mailing tax returns

PEEL AND SEAL CONVENIENCE – Easy Close Design Features Durable No Lick Flap with Pre-Moistened Adhesive Strip & Removable Backing; Just Peel, Press & Send

HEAVY 28 LB PAPER STOCK – Prevents Rips, Tears, Weather & Travel Damage While Providing Thick, Durable Surface for Printed Return Address & Other Custom Detail

NO. 6 x 9 BOOKLET ENVELOPE PACK : 6” x 9” size business envelopes are perfect for mailing a variety of big documents including booklets, catalogs, forms, invoices & cards great envelopes for mailing tax returns ideal size for brochures, legal docs, wedding invitations & direct mailers offers maximum space within USPS 1-stamp dimension requirements; buy bulk & save big on both supplies & shipping.

DURABLE 24LB PAPER : These colored business envelopes are crafted from durable 24lb High quality Starburst paper. This makes them economical and durable.

BRIGHT COLOR : These brightly colored envelopes never fail to impress. Attractive and attention-grabbing, these multicolor envelopes are a popular choice for sending marketing mailers.

A7 Size Envelope (5 1/4 x 7 1/4)

70lb Text Paper Stock

Booklet Style Square Flap

A Quantity of 500 - 9 x 12 Booklet Envelope - 28# White

28# White Wove Paper - Regular Gummed Flap

Great for mailing Invoices, statements, catalogs or announcements.

9 X 12 White Envelope

Booklet / Open Side Style

150 Envelopes per Box

Get a box of 100 Columbian 9 x 12 envelopes with SimplySafe tamper-evident pull strips and security tinted interiors for mailing sensitive oversized documents; easy peel off Release & Seal closure

Columbian 9 x 12 envelopes have a patented SimplySafe seal that will show signs of tampering, safeguarding against unauthorized opening

Security envelopes have a strong security tint pattern so you can't see what's inside; ideal for obscuring more sensitive information and protecting critical documents

Color: Teal Green

Size: Letter (9 1/2 x 1 1/4 x 11 1/2 inches)

Quantity: 12 per pack

Size: A7 size colorful envelope, made of 5 1/4" x 7 1/4" standard A7 size, with a square seal in the form of a glue booklet, made of high-quality paper, thick and durable, with excellent sealing performance. Your privacy will be well protected.

Design: This 5x7 colorful envelope is very suitable for 5x7 cards/photos. (Pink, light green, light blue, light purple, bright red, lake blue, yellow, orange, dark purple, green) These colorful envelopes are also very suitable for direct mail, letters, postcards, weddings, birthdays, baby showers, graduations.

Sealing: This is a huge time-saving card envelope, each envelope comes with a separate tape, just tear off the protective strip, press, and seal it. Easy to seal peeling and sealing and closing operations, this type of adhesive is ideal for commercial applications, wedding announcements, and mailing.

NO. 9 x 12 BOOKLET ENVELOPE PACK : 9” x 12” size open side business envelopes are perfect for mailing a variety of big documents including booklets, catalogs, forms, invoices & cards great envelopes for mailing tax returns ideal size for brochures, legal docs, wedding invitations & direct mailers.

DURABLE 24LB PAPER : These colored business envelopes are crafted from durable 24lb High quality Starburst paper. This makes them economical and durable.

BRIGHT COLOR : These brightly colored envelopes never fail to impress. Attractive and attention-grabbing, these multicolor envelopes are a popular choice for sending marketing mailers.

120 PACKS KRAFT ENVELOPES - Package contents 120 PCS security catalog envelopes, perfect size 6x9 inches, printable Kraft envelopes allow you print shipping label or other custom label via your laser or inkjet printers, great for household, office, business, legal and more.

HIGH QUALITY MATERIAL - Reject the cheap quality paper! All our Security Catalog Envelopes are made of superior Kraft paper in 2X thicken improvement to offer a top quality, which features exceptional rip, tear and puncture resistance, made to last.

SELF SEAL SECURITY CATALOG ENVELOPES - No glue and water required, no need to lick the envelopes to seal. The envelopes are with self seal design to offer a strong and convenient sealing experience for you, keep the inner documents safe all the time.

THICK and DURABLE ENVELOPES - made from the most popular business letterhead or stationery weight of 24lb bond / 60lb text paper that greatly holds mailing documents; Gummed Booklet Style Square Flap that provides extra security for document's safe-keeping

STANDARD A2 SIZED ENVELOPES - 4 3/8” x 5 3/4” inches that fit any 4.25 x 5.5 letters, postcards, greeting cards, photos, announcements, social and invitation purposes and more; ideal large reply envelope size that fits inside A7, A8, A9 and A10 sizes envelopes

PERFECT FOR BUSINESS OR PERSONAL USE - great for enclosing your Save the Dates, DIY Invitations, Thank you cards, Graduation announcements, Do-It-Your-self Greeting Cards, and business correspondence; it can be hand addressed or professionally printed

Size: A7 size white environmental protection envelope, made of 5 1/4" x 7 1/4" standard A7 size, with a square seal in the form of a glue booklet, made of 120 g kraft paper, thick and durable, with excellent sealing performance. Your privacy will be well protected.

Privacy Protection: These invitation envelopes for 5x7 cards are thick, sturdy and not see- through, keeping your contents private and refusing to leak. This 5x7 envelope is very suitable for 5x7 cards/photos. These envelopes are also very suitable for direct mail, letters, postcards, weddings, birthdays, baby showers, graduations, holidays, handmade cards, business.

Sealing: This is a huge time-saving envelope, each envelope comes with a separate tape, just tear off the protective strip, press, and seal it. Easy to seal peeling and sealing and closing operations, this type of adhesive is ideal for commercial applications, wedding announcements, and mailing.

6x9 Envelopes: Dimension of Eupako small catalog envelopes is 6x9 inches, smooth touching and professional looking, designed with a self seal and pre-folded flap, saving much time when handling multiple mailings.

Set of 250: Package includes 250 pack 6x9 envelopes self seal, meeting the need of home, office and business use. The catalog mailing envelopes are ideal for mailing catalogs, photos, booklets, bulletins, brochures, handmade cards, Christmas cards, wedding invitations and folded sheets of papers.

Self-sealing Flap: The brown catalog envelope is easy to use. Just peeling off the strip and sealing the flap to get an effortless mailing, no need to lick or moisten. Also, the adhesion of flap is quite strong, secure and lasting, keeping contents from falling out when transiting.

Size: 7 x 10 Booklet Envelopes / 7 in x 10 in / 7" x 10" / 178mm x 254mm

Quantity: Pack of 50

Color: 24lb. Bright White

6x9 booklet envelopes, latex self seal, are the perfect size for holding half size sheets paper at 5.5” x 8.5”, or a standard 8.5'' x 11'' letter paper folded in half, with a wide opening that saves times when stuffing booklets, catalogs, cards, or brochures inside

Our booklet envelope 6x9 design opens along the long side edge, making them easy to stuff through the open side. Just press and seal to create a strong lasting seal, with no need to worry about your contents failing out during transit even when shipping hefty shipments like half size catalogs or magazines

The dark black security tint lining and permanent seal in our envelopes (6x9 inches) provide complete security your documents are safe from others during transit, making each envelope safe for sensitive documents like tax, legal, and financial documents

10 X 13 White Envelope

Booklet / Open Side Style

100 Envelopes per Box

BOOKLET ENVELOPES: These large envelopes are the professional way to ship flat but bulky materials, including pamphlets, brochures, sales literature, booklets, folders, annual reports, magazines, catalogs, and more. The rectangular flap is on the long side for easier filling. Our 6” x 9” envelopes are adaptable to a variety of professional situations.

MOISTENABLE GLUE SEAL: These envelopes are designed with a traditional moistenable adhesive sealing method, making them an excellent option for quick and easy projects. To seal, use the moistening method of your choice. Simply moisten the strip of adhesive, apply pressure, and you’ll have the perfect seal. It couldn’t be easier!

ADD TO YOUR SHIPPING SUPPLIES: These 6” x 9” envelopes are the perfect size for shipping a variety of materials and small items. The professional look will reflect on you, making you or your small business appear more official. Whether you use these mailing supplies for your business, professional, or even personal use, we have a variety of styles and colors that are adaptable to any use.

Size: 7 1/2 x 10 1/2 Booklet Envelopes 7 1/2 in x 10 1/2 in / 7.5” x 10.5” / 190mm x 267mm

Quantity: Pack of 50

Color: 24lb. Bright White - The standard weight for envelopes, great for everyday business. Is the least expensive white paper, but isn't "cheap" looking

Perfect size for holding half size sheets paper at 5.5” x 8.5”, or a standard 8.5'' x 11'' letter paper folded in half, with a wide opening that saves times when stuffing booklets, catalogs, cards, or brochures inside

Just peel and seal to create a strong lasting seal, with no need to worry about your contents failing out during transit even when shipping hefty shipments like half size catalogs or magazines

The dark black security tint lining and permanent seal provide complete security your documents are safe from others during transit, making these envelopes safe for sensitive documents like tax, legal, and financial documents

THICK and DURABLE ENVELOPES - made from the most popular business letterhead or stationery weight of 24lb bond / 60lb text paper that greatly holds mailing documents; Gummed Booklet Style Square Flap that provides extra security for document's safe-keeping

STANDARD A6 SIZED ENVELOPES - 4.75” x 6.5” inches that fit any 4x6 letters, postcards, greeting cards, photos, announcements, social and invitation purposes and more; ideal large reply envelope size that fits inside A7, A8, A9 and A10 sizes envelopes

PERFECT FOR BUSINESS OR PERSONAL USE - great for enclosing your Save the Dates, DIY Invitations, Thank you cards, Graduation announcements, Do-It-Your-self Greeting Cards, and business correspondence; it can be hand addressed or professionally printed

6 x 9 White Booklet Envelopes (Flap on the 9” Side)

Booklet or Open Side Style is Perfect for Easy Loading of Documents, Greeting Cards, invitations, Pictures, Letters and other Home, School, or Office Mailers

Value Box of 500 Envelopes with Strong Gum Flap